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Left: Primed human embryonic stem cells have one active X chromosome (one red dot in each blue nucleus). Right: Naive human embryonic stem cells have two active X chromosomes (two red dots in each blue nucleus).
Andrew Goldstein photographed in a UCLA lab.
After radiation, blood cells (purple) regenerated in the bone marrow of mice that were given DKK1 intravenously (left), but not in those that received saline solution (right).
Microscope image of cardiac calcification in a mouse showing cardiac fibroblasts (red) expressing the ENPP1 protein (green and yellow)
Headshot of Donald Kohn in a lab sitting down
Kathrin Plath stands in a UCLA lab and smiles at the camera.
3-D bioengineered lung-like tissue (left) resembles adult human lung (right).
Colorful staining indicates higher levels of a key sugar metabolism regulator in naïve (bottom row) versus primed (top row) human embryonic stem cells.